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What are the fastest-growing counties in New Mexico?

Valencia County (+7.2%), Torrance County (+6.9%) and Sandoval County (+6.9%) grew fastest in New Mexico between 2020 and 2025.

New Mexico as a whole grew 0.3% between 2020 and 2025, to 2,125,498 residents.

Data as of 2025 · updated

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All 33 New Mexico counties ranked

New Mexico counties by population growth
RankCountyResidents 2025Change 2020–25Net migration per 1,000, 2025New homes per 1,000, 2025
1Valencia County82,013+7.2%13.83.1
2Torrance County16,100+6.9%14.2–
3Sandoval County159,565+6.9%12.96.4
4Catron County3,827+6.1%12.5–
5Doña Ana County229,091+4.1%2.53.6
6Otero County70,368+3.7%−6.30.0
7Santa Fe County156,907+1.2%−0.93.2
8Taos County34,564+0.3%7.03.0
9Eddy County62,509+0.3%5.33.9
10Lea County74,749+0.2%−5.21.9
11Los Alamos County19,407−0.0%−4.40.8
12Luna County25,407−0.2%−8.60.1
13Cibola County26,807−0.6%4.8–
14San Juan County120,340−0.9%−1.50.7
15Rio Arriba County39,832−1.0%−2.5–
16Bernalillo County667,601−1.4%−4.72.3
17Colfax County12,184−1.4%−8.0–
18Sierra County11,395−1.4%14.2–
19Guadalupe County4,343−2.2%−6.0–
20Lincoln County19,844−2.3%−3.25.6
21De Baca County1,647−2.4%11.5–
22Chaves County63,364−2.7%−5.11.2
23Roosevelt County18,615−2.8%−10.70.0
24Quay County8,454−3.0%−6.0–
25San Miguel County26,260−3.2%−1.70.0
26Mora County4,051−3.3%−4.2–
27Grant County27,252−3.4%−3.1–
28Curry County46,655−3.5%−21.61.3
29Socorro County15,838−4.3%−4.1–
30Union County3,844−5.6%−16.9–
31Hidalgo County3,929−5.6%−3.3–
32McKinley County68,119−6.1%−6.60.0
–Harding County617–––

Ranked by the change in Census Bureau population estimates, 2020–2025. 1 county is listed last and not ranked: fewer than 1,000 residents, or no estimate for the same years.

Statewide totals

More county rankings for New Mexico

Metro areas

Fastest-growing metro areas in the U.S.

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Questions

Is New Mexico growing?

New Mexico as a whole grew 0.3% between 2020 and 2025, to 2,125,498 residents. Statewide figures add up its counties.

What is the fastest-growing county in New Mexico?

Valencia County, which grew 7.2% between 2020 and 2025 to 82,013 residents (Census Bureau population estimates). Torrance County (+6.9%) and Sandoval County (+6.9%) came next.

Which New Mexico counties are losing population?

22 of the 32 ranked counties had fewer residents in 2025 than in 2020. The steepest declines: McKinley County (−6.1%), Hidalgo County (−5.6%), Union County (−5.6%).

Where are people moving in New Mexico?

For their size, Sierra County (14.2 per 1,000 residents), Torrance County (14.2 per 1,000 residents) and Valencia County (13.8 per 1,000 residents) drew the most net domestic migration (people moving in from other U.S. counties minus people moving out) in 2025.

Fastest-growing counties in other states

Across the U.S.

Sources and method

Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.